82890767 has 4 divisors (see below), whose sum is σ = 85131096. Its totient is φ = 80650440.

The previous prime is 82890763. The next prime is 82890823. The reversal of 82890767 is 76709828.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 82890767 - 2² = 82890763 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82890761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1120109 + ... + 1120182.

It is an arithmetic number, because the mean of its divisors is an integer number (21282774).

Almost surely, 2^82890767 is an apocalyptic number.

82890767 is a deficient number, since it is larger than the sum of its proper divisors (2240329).

82890767 is a wasteful number, since it uses less digits than its factorization.

82890767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2240328.

The product of its (nonzero) digits is 338688, while the sum is 47.

The square root of 82890767 is about 9104.4366657141. The cubic root of 82890767 is about 436.0156248784.

The spelling of 82890767 in words is "eighty-two million, eight hundred ninety thousand, seven hundred sixty-seven".